55393394697 has 16 divisors (see below), whose sum is σ = 82143772480. Its totient is φ = 36893162016.

The previous prime is 55393394663. The next prime is 55393394701. The reversal of 55393394697 is 79649339355.

55393394697 is a `hidden beast` number, since 5 + 53 + 93 + 39 + 469 + 7 = 666.

It is not a de Polignac number, because 55393394697 - 2⁷ = 55393394569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55393394627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 965143 + ... + 1020924.

It is an arithmetic number, because the mean of its divisors is an integer number (5133985780).

Almost surely, 2^55393394697 is an apocalyptic number.

It is an amenable number.

55393394697 is a deficient number, since it is larger than the sum of its proper divisors (26750377783).

55393394697 is a wasteful number, since it uses less digits than its factorization.

55393394697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987109 (or 1987103 counting only the distinct ones).

The product of its digits is 82668600, while the sum is 63.

The spelling of 55393394697 in words is "fifty-five billion, three hundred ninety-three million, three hundred ninety-four thousand, six hundred ninety-seven".